diff --git a/index.js b/index.js
index 19cb102..142c6d1 100644
--- a/index.js
+++ b/index.js
@@ -4,6 +4,8 @@ var PromiseA = require('bluebird');
 var dns = PromiseA.promisifyAll(require('dns'));
 var Challenge = module.exports;
 
+var leDnsResponse;
+
 Challenge.create = function (defaults) {
   return {
     getOptions: function () {
@@ -24,32 +26,40 @@ Challenge.set = function (args, domain, challenge, keyAuthorization, cb) {
     .replace(/\//g, '_')
     .replace(/=+$/g, '')
     ;
-  var challengeDomain = (args.test || '') + args.acmeChallengeDns + domain;
+  var challengeDomain = domain;
 
-  console.info("");
-  console.info("Challenge for '" + domain + "'");
-  console.info("");
-  console.info("We now present (for you copy-and-paste pleasure) your ACME Challenge");
-  console.info("public Challenge and secret KeyAuthorization and Digest, in that order, respectively:");
-  console.info(challenge);
-  console.info(keyAuthorization);
-  console.info(keyAuthDigest);
-  console.info("");
-  console.info(challengeDomain + "\tTXT " + keyAuthDigest + "\tTTL 60");
-  console.info("");
-  console.info(JSON.stringify({
-    domain: domain
-  , challenge: challenge
-  , keyAuthorization: keyAuthorization
-  , keyAuthDigest: keyAuthDigest
-  }, null, '  ').replace(/^/gm, '\t'));
-  console.info("");
-  console.info("hit enter to continue...");
-  process.stdin.resume();
-  process.stdin.on('data', function () {
-    process.stdin.pause();
-    cb(null);
-  });
+  if (this.leDnsResponse) {
+      this.leDnsResponse(challenge, keyAuthorization, keyAuthDigest, challengeDomain, domain)
+      .then((successMessage) => {
+          console.log("Yay! " + successMessage);
+          cb(null);
+      });
+  } else {
+    console.info("");
+    console.info("Challenge for '" + domain + "'");
+    console.info("");
+    console.info("We now present (for you copy-and-paste pleasure) your ACME Challenge");
+    console.info("public Challenge and secret KeyAuthorization and Digest, in that order, respectively:");
+    console.info(challenge);
+    console.info(keyAuthorization);
+    console.info(keyAuthDigest);
+    console.info("");
+    console.info(challengeDomain + "\tTXT " + keyAuthDigest + "\tTTL 60");
+    console.info("");
+    console.info(JSON.stringify({
+      domain: domain
+    , challenge: challenge
+    , keyAuthorization: keyAuthorization
+    , keyAuthDigest: keyAuthDigest
+    }, null, '  ').replace(/^/gm, '\t'));
+    console.info("");
+    console.info("hit enter to continue...");
+    process.stdin.resume();
+    process.stdin.on('data', function () {
+      process.stdin.pause();
+      cb(null);
+    });
+  }
 };
 
 // nothing to do here, that's why it's manual
diff --git a/moz_test.js b/moz_test.js
new file mode 100644
index 0000000..1f4a1b2
--- /dev/null
+++ b/moz_test.js
@@ -0,0 +1,102 @@
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+'use strict';
+
+var le;
+var fetch = require('node-fetch');
+var LE = require('greenlock');
+var leChallengeDns = require('./index.js').create({ debug: false })
+// Storage Backend
+var leStore = require('le-store-certbot').create({
+  configDir: '~/letsencrypt/etc'   // or /etc/letsencrypt or wherever
+, debug: true
+, logsDir: '~/letsencrypt/var/log'
+});
+
+function leAgree(opts, agreeCb) {
+  // opts = { email, domains, tosUrl }
+  agreeCb(null, opts.tosUrl);
+}
+
+let subdomain = String(Math.random()).replace('.','');
+
+le = LE.create({
+  server: LE.productionServerUrl                               // Change to LE.productionServerUrl in production
+, challengeType: 'dns-01'
+, challenges: {
+    'dns-01': leChallengeDns
+  }
+, approveDomains: [  subdomain + '.box.knilxof.org' ]
+, agreeToTerms: leAgree                                   // hook to allow user to view and accept LE TOS
+, debug: true
+, store: leStore
+});
+
+
+
+// Check in-memory cache of certificates for the named domain
+le.check({ domains: [ subdomain + '.box.knilxof.org' ] }).then(function (results) {
+
+    if (results) {
+        // we already have certificates
+        return;
+    }
+
+    let token;
+    let challenge;
+
+    // promise to be called when LE has the dns challenge ready for us
+    leChallengeDns.leDnsResponse = function(challenge, keyAuthorization, keyAuthDigest, challengeDomain, domain){
+
+        console.info("");
+        console.info("Challenge for '" + domain + "'");
+        console.info("");
+        console.info("We now present (for you copy-and-paste pleasure) your ACME Challenge");
+        console.info("public Challenge and secret KeyAuthorization and Digest, in that order, respectively:");
+        console.info(challenge);
+        console.info(keyAuthorization);
+        console.info(keyAuthDigest);
+        console.info("");
+        console.info(challengeDomain + "\tTXT " + keyAuthDigest + "\tTTL 60");
+        console.info("");
+        console.info(JSON.stringify({
+          domain: domain
+        , challenge: challenge
+        , keyAuthorization: keyAuthorization
+        , keyAuthDigest: keyAuthDigest
+        }, null, '  ').replace(/^/gm, '\t'));
+        console.info("");
+
+        return new Promise((resolve, reject) => {
+            // ok now that we have a challenge, we call our gateway to setup the TXT record
+            fetch('http://knilxof.org//dnsconfig?token=' + token + '&challenge=' + keyAuthDigest)
+            .then(function(res) { return res.text(); }).then(function(body) {
+                console.log(body);
+                resolve("Success!");
+            });
+        });
+    }
+
+    fetch('http://knilxof.org/subscribe?name=' + subdomain)
+        .then(function (res) { return res.text(); })
+        .then(function (body) {
+        const jsonBody = JSON.parse(body);
+        token = jsonBody.token;
+        // Register Let's Encrypt
+        le.register({
+            domains: [subdomain + '.box.knilxof.org']                           // CHANGE TO YOUR DOMAIN (list for SANS)
+            , email: 'john.doe@example.com'                                    // CHANGE TO YOUR EMAIL
+            , agreeTos: true                                              // set to tosUrl string (or true) to pre-approve (and skip agreeToTerms)
+            , rsaKeySize: 2048                                           // 2048 or higher
+            , challengeType: 'dns-01'                                   // http-01, tls-sni-01, or dns-01
+        }).then(function (results) {
+            console.log('success');
+        }, function (err) {
+            console.error('[Error]: node-greenlock/examples/standalone');
+            console.error(err.stack);
+        });
+    });
+});
+